UV unwrapping and Glass texture
You desperately need an HDR background (in the world settings).

You can find free HDRs all over the internet but I personally prefer Greg Zaal's because he actually releases high quality, free ones:

http://adaptivesamples.com

Add an HDR with an environment node in the cycles world settings something like this:



A single ground plane will help a bit, but this is how you need to really get better looking glossy materials if you don't have an entire scene already filled in.

You can read about this technique and other material techniques here:

http://www.blenderguru.com/articles/making-better-materials/